// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "testing/gtest/include/gtest/gtest.h"

#include "base/memory/scoped_ptr.h"
#include "ui/base/view_prop.h"

namespace {
const char kKey1[] = "key_1";
const char kKey2[] = "key_2";
} // namespace

namespace ui {

// Test a handful of viewprop assertions.
TEST(ViewPropTest, Basic)
{
    gfx::AcceleratedWidget nv1 = reinterpret_cast<gfx::AcceleratedWidget>(1);
    gfx::AcceleratedWidget nv2 = reinterpret_cast<gfx::AcceleratedWidget>(2);

    void* data1 = reinterpret_cast<void*>(11);
    void* data2 = reinterpret_cast<void*>(12);

    // Initial value for a new view/key pair should be NULL.
    EXPECT_EQ(NULL, ViewProp::GetValue(nv1, kKey1));

    {
        // Register a value for a view/key pair.
        ViewProp prop(nv1, kKey1, data1);
        EXPECT_EQ(data1, ViewProp::GetValue(nv1, kKey1));
    }

    // The property fell out of scope, so the value should now be NULL.
    EXPECT_EQ(NULL, ViewProp::GetValue(nv1, kKey1));

    {
        // Register a value for a view/key pair.
        scoped_ptr<ViewProp> v1(new ViewProp(nv1, kKey1, data1));
        EXPECT_EQ(data1, ViewProp::GetValue(nv1, kKey1));

        // Register a value for the same view/key pair.
        scoped_ptr<ViewProp> v2(new ViewProp(nv1, kKey1, data2));
        // The new value should take over.
        EXPECT_EQ(data2, ViewProp::GetValue(nv1, kKey1));

        // Null out the first ViewProp, which should NULL out the value.
        v1.reset(NULL);
        EXPECT_EQ(NULL, ViewProp::GetValue(nv1, kKey1));
    }

    // The property fell out of scope, so the value should now be NULL.
    EXPECT_EQ(NULL, ViewProp::GetValue(nv1, kKey1));

    {
        // Register a value for a view/key pair.
        scoped_ptr<ViewProp> v1(new ViewProp(nv1, kKey1, data1));
        scoped_ptr<ViewProp> v2(new ViewProp(nv2, kKey2, data2));
        EXPECT_EQ(data1, ViewProp::GetValue(nv1, kKey1));
        EXPECT_EQ(data2, ViewProp::GetValue(nv2, kKey2));

        v1.reset(NULL);
        EXPECT_EQ(NULL, ViewProp::GetValue(nv1, kKey1));
        EXPECT_EQ(data2, ViewProp::GetValue(nv2, kKey2));

        v2.reset(NULL);
        EXPECT_EQ(NULL, ViewProp::GetValue(nv1, kKey1));
        EXPECT_EQ(NULL, ViewProp::GetValue(nv2, kKey2));
    }
}

} // namespace ui
